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Mechanical processing burr treatment method

Hello everyone, Shenzhen mechanical processing division processing stage, its processing quality requirements of the surface, are divided into processing stages, generally can be effectively divided into rough processing, semi-finishing and finishing three stages.
Mainly to ensure the processing quality; it is conducive to the rational use of equipment, easy to arrange heat treatment process, and easy to find blank defects.
First machining the reference surface: When the part is in the process, the surface used as the positioning reference should be processed first to provide a fine reference for the processing of the subsequent process as soon as possible. Called “baseline first.”
For machining parts such as boxes, brackets and connecting rods, the machining of the plane should be processed first. In this way, the hole can be machined in a plane to ensure the positional accuracy of the plane and the hole.
Moreover, it is convenient to process the holes in the plane. Finishing of the main surface (such as grinding, honing, fine grinding, rolling, etc.) should be carried out at the final stage of the process, and the surface finish after processing is above Ra0.8um.
A slight collision will damage the surface. After finishing, it should be protected with flannel. It is absolutely not allowed to directly touch the workpiece by hand or other objects, so as to avoid the surface of the finishing process, which is damaged due to the transportation and installation between the processes.

1. The traditional way of deburring by hand is steel shovel, sandpaper, and grinding head grinding; while the trimming knives gradually replace these traditional methods, which are simple and convenient to use, do not require technical treatment, are cost-effective and environmentally friendly.
2. Chemical deburring is the use of the principle of electrochemical reaction to automatically and selectively complete the deburring operation on parts made of metal materials. Suitable for internal burrs, heat treated and finished parts that are difficult to remove.
3. Electrolytic deburring is suitable for removing the burrs of the cross-holes or complicated parts of the hidden parts in the parts, and the production efficiency is high, and the deburring time generally takes only a few seconds to several tens of seconds.
This method is commonly used for deburring of gears, splines, connecting rods, valve bodies and crankshaft oil passage orifices, as well as rounding of sharp corners. The disadvantage is that the vicinity of the burr of the part is also subjected to electrolysis, and the surface will lose its original luster and even affect the dimensional accuracy.

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